Improvement in appaeatus for operating sewing-machines



Quinn faire getint ffice Letters'Patent No. 75,667, dated March 17, 1868.

IMPltOVEISEENT IN APPARATUS POR OPERATING SEWING-MACHINES.

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'rowHoM rr MAY concerns: ,Y p g Be it known that I, AneIBALD C. CRARY, a resident of the city of Utica, county of Oneida, New York,

A have invented a new and useful Improvement in the Mode of Operating ,Sewing-Maohines, Stocking-Looms,

Jewellers or Light Lathes, andvMelodeons.

The nature of my invention consists in the mode of operating, by means of the treadle or its equivalent, springs attached to sewing-machines, stocking-looms,jewellers or light lathes,'and melodeons, for the purpose t ot operating the'same, which spring or springs are coiledwor woundup by the application of the motive power by whichthey are operated, directly to the pcripheries ofithese springs, or to the circumferences Aof their enclosures; and do hereby declare that the following is a full, clear, and exact description of the construct-ion and operation of theysame, reference being had to the accompanying drawings making a part of this specification,`

i Figure 1 represents an end view, showing the treadle, thescremand the racks, pinions, friction-rollers, cylindershaft,and ratchet, connected with and operated by thefsaid'screw, the seat of the operator, the drums enclosing the said springs. I Figure 2 represents the front view, including the seat, the counter-gear, pendulum, and the connections -with the p'en'dulum the crank, used as an equivalent to 'the tr'eadle; the counterpoised needle'bar, and feed Figure 3 is the end view of gear `B13 B, and of the eccentrics with which they are connected. Figure 4 is a side view of gear B13 B, (which operate the feed,) and of the said eccentrics.

` Thev Treadle. t y

The treadle and its. appurtenants, when applied to winding concentric springs, consist of the shaft A, with a crank in its centre; the balance-wheel .A1 on the shaft A, by the side of the Acrank gw the drive-wheel A2,; the pit-man A3, which connects the treadle A4 with the crank of shaft A. This crank, being rotated in opposition to the continuous action of the springs B Bl B2, thc` treadle-spring A5 is required to overcome this resistance, and to raise this crank, when the treadle is relieved of the pressure of lthe operators foot. The balance-wheel A is used to force the cranks of shaft A past its centres. The toothed wheel Azis firmly connected with shaft A, and meshes in the intermediate, D2. 'lhis intermediate is a loose wheel on shaft D, and meshes in the drumL enclosing spring B. When the treadle acts on spring B, it windsup the series of springs B B1 B2, simultaneously. These springs may be enclosed in drums, or used otherwise. When the intermediate, D2, is not used,

`the drive-wheel A2 meshes in the periphery of drum B, and thus winds up the spring enclosedin that drum, and

the series of springs connected with it. A series of concentric springs is 4formed by attaching the several springs tothe concave 'sides of the several drums, orother enclosures of the said springs, and attaching two or more springs to each shaft. The periphery of spring B receives the motive power, and this force -passes toits centre, and is, by the shaft which contains springs v'.B and B1, transmitted to the centre of spring-B1, (which meshes in spring B2.) From the centre of. spring Bl this force passes to spring B2, and in like manner through any number of springs, to the pinions and drittewheels, which connect these springs with the machinery to be operated by this force or motive power. On the end ofthe shaft which contains spring B is the ratchet B B,

. which is firmly connected with the enclosure of spring B. The pawl G G is connected withA the frame, which contains the machinery, and drops into the periphery of the ratchet B R, and thus prevents the recoil of the springs B Bl Bg when the process of winding'thc springs has ceased. The springs BB1 B2, being wound up, spring B2 commences giving off to the machinery connected with it the motive power received by spring B. On the shaft which contains spring B2 is a drive-wheel, B", which meshes in the pinion B6. v On the shaft with pinion B is a' drive-wheel, B7, which meshesin the intermediate, B5, which meshes in the intermediate, B, and this wheel meshes in the pinion B". The shaft, which contains the pinion Bl, projects lfrom the frame, and contains on the outside of the frame proper, and within the frame-bar B L, a small Vdrive-wheel, B, and outside of the frame-bar B L this shaft contains the needle-crank B Necdle- Crank.

The needle-cranl B H' is formed by a counterpoised bar, so balanced as to render the momentum of the weight on the blank end of this bar equal to that of the needle-har B I. The needle-bar B I moves freely through the' arms of the bracket B Y. The bracket B Y is securely fastened to the two Aflat bars which pass horizontally in front of the frame proper, B L being the upper, and B M the lower'of the said bars. vThe necdle-crank B H .is connected with the needle-bar B I by a pitman. This pitman is inserted in the upper end of the needle-bar` and is held in that connection by a holt, which permits the oscillation necessary for the pitman.

Feed. y

The three bars L Ll L2, shown in the front view, fig. 2, operate the feed. The Ahars L Ll operate directly on the feed-bar L6, giving it a vertical movement. L2 is connected with the toggle joint, (or a curved spring,) L", and by the action of the toggle-joint orspring) in being straightened, gives t-o the feedbar its longitudinali motion. The movement of the bars L L1 L2 are produced by the action of the eccentrics M M M2, which are contained in the upper ends of the bars L Ll L2, and are severally connected with the pinions B12 B B4. B2 and B mesh in and receive their motive power from Bl.

Pendulum.

The pendulum shown on the front view, Eg. 2, receives its motive power from the ratchet and escnpement usually connected with a pendulum. This ratchet is on the same shaft with the coggcd pinion P4, which meshes' in the intermediate, P5, which meshes in the drive-wheel P6 on the shaft B This shaft passes through the frame in a line parallel to the shaft of the machine, and the same shaft which contains spring B2 and the l drivewheel B". Drive-wheel P3 maybe placed on a shaft parallel to the shaft containing the spring B2, and by means of a pinion meshing in the periphery of springB2, or other suitable connection, regulate the velocity of spring B, and consequently of the remainder ofthe machinery. The pendulum or its equivalent may he placed above ror on either side of the machine, and connected with the periphery of a spring, or either ofthe wheels,

which will allow the necessary velocity of the needle.

y Rotating Seat.

Fig. 1 represents an end view of the seat of the operator, and of the machinery connected with it. Prejecting from thelower side of the seat C is a pivot or dowel 05, descending into the top of the plunger C. This plunger is contained in a vertical cylinder, C2, and is permitted to move freely in the cylinder C2, when pressed down by the weight of the operator. At the top of the plunger C is a ange, C, securely fastened to the plunger. 0n the fiange Cl the scat is supported. The pivot()5 retains the seat in its position, and permits it to rotate freely. Cylinder C2l is securely fastened to the platform C, (on which the machinery is placcd,) by means of ilange C, orit may be similarly connected with the descending leaf of a cabinet. In one side of the plunger C is arack, C7.- This rack is securely doveftailed in the side of plunger C, (or the rack C7 may' be cast as a part of plunger Cl.) In the'side of cylinder C2 is a nick, C8, of sufficient width for rack C to movefreely through when the plunger Cl is raised or'descends. Near the top of cylinder C2, and close to the side ofthe nick C2, `isan ear, C9, in which is inserted 'the shaft D. Shaft' D passes from its connection with the vertical cylinder Gl? to the frame which contains lthe machinery. The loose wheel D2 and the ratchet L M are on the shaft D. This ratchet L M is tirmly connected with the shaft D, and is close to the side ofthe wheel D2. When the shaft D is turned around by the operation 'of the pinions D, which meshes in the rack C7, the ratchet L M (by means of the pawl D) causes the wheel D2 to rotate, and thus winds up the series of springs B B1 B2, as above'described. The pawl D* is connected with the sides of wheel D2, and drops in the periphery of ratchet L M.

l The Screw.

The end view 1 also shows the screw, and the machinery connected with it. The screw may be used as equivalent to the treadle. The screw Gis enclosed at its top in the nut G. This nut at its ends is firmly connected with the racks G2 G3. These racks mesh in the anged pinion H, which is on and firmly fastened to the hollow shaft H2. This hollow shaft is irmlyconnected at its end, near the loose wheel D2, with the ratchet H3. The ratchet H3 receives in its periphery the pawl K, which is securely fastened by a pivot to the wheel D2. When the screw Gis turned forward this nut rises. The racks G2 Gr3 causethe pinion H to rotate, which turns the hollow shaft H2, and the ratchet H3, by means of the pawl K, causes the intermediate, D2,'to revolve, andconsequently wind up the spring B B1 B2.

The Crank.

The end -view 1 also shows the crank E, its shaft El, and its drive-wheel E2. The crank operates directly on the periphery of spring B. 'The crank E is securely fastened to the end of shaft El, and is situated on the outside of the frame which contains the machinery. On the shaft El, and securely fastened to this shaft, is the drive-wheel E2, which meshes in the rowof cogs on the Idrum which encloses the spring B, and thus winds up the series of springs B Bl B2.

The Lever.

Instead of the screw, as shown, (in end view 1,) a lever and' lever-spring, as shown in end view 1, similar to the treadle and spring 4, may be connected with the lower ends of racks G2 G2, and through the connection of these racks with the hollow shaft H2, ratchet H2, and pawl H, operating on the intermediate, D2, wind up the springs B B1 B2, as above stated. 'I l Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. The combination and arrangement of a. s eries of springs and their connection, for the purpose of pro'- pelling or operating sewing-machines, substantially as described.

2. The application of motive power or force to the periphery or peripheries of concentric or coiled springs,

or alternately to the peripheries of a series of springs, substantially as herein described, for the purpose of propelling or operating sewing-machines, substantially as described.

3. TheO mode or manner, substantially as herein described, ot' ceiling or winding up concentric or coiled springs for the uses and purposes herein stated, by means of the' treadle or its equivalent, riz, the operators rotating seat,A the screw, the crank, and the lever.

4. The mode, substantially as herein described, of constructing the operators rotating seat,l and of its attachment, for the uses and purposes aforesaid.

ARCHIBALD C. CRARY.

Witnesses:

M. M. JoNEs, B. DEMING. 

